Lugar de publicación
Trans. Amer. Philos. Soc. ser. 2, 7: (1841)
Referencias
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Nuttall (1841)
Nuttall, T. 1841. Descriptions of new Species and Genera of Plants in the natural Order of the Compositae, collected in a Tour across the Continent to the Pacific, a Residence in Oregon, and a Visit to the Sandwich Islands and Upper California, during the years 1834 and 1835. Transactions of the American Philosophical Society 7: 283-453